Police arrested a suspect early Saturday in the fatal shooting at South Carolina State University . Justin Bernard Singleton , 19 , was charged with Friday 's murder of 20-year-old student Brandon Robinson , according to a statement from the South Carolina Law Enforcement Division .

The two were arguing when Singleton pulled out a gun and shot Robinson in the neck , police said .

After the shooting in Orangeburg County , police initially started a manhunt for a total of four possible suspects .

`` He was a very nice young man , '' university President Thomas Elzey said of Robinson , fighting back tears in a brief statement to reporters Friday . `` And it hurts . It hurts us all . ''

Elzey said `` we are pulling together as a community , '' announcing that counselors would be made available to grieving students .

`` Our first order of business is to make sure that our students are safe , '' the school president said .

Campus police were called to the Andrew Hugine Suites Living and Learning community about 1:30 p.m. and found the injured student , the university said . Police said eyewitnesses identified four suspects who had left the campus , the university said .

The school was initially put on lockdown ; those restrictions were lifted a few hours later . Nonetheless , South Carolina State 's Facebook page still urged people to `` remain cautious and report any suspicious activity to police . ''

South Carolina State is a historically black university with about 4,000 students , according to the school website . The campus is about 40 miles south of Columbia .

CNN first learned about the incident via Twitter .

This is at least the third campus shooting this week .

On Tuesday , a man shot and killed another student inside Purdue University 's electrical engineering building . Police said Cody Cousins , 23 , an engineering student , killed Andrew Bolt , 21 , of West Bend , Wisconsin . Cousins was charged with murder .

On Monday , a student was shot and critically injured near a gym at Widener University near Philadelphia . Police were looking for a suspect .

On Wednesday , the University of Oklahoma in Norman briefly shut down after a report of a possible shooting that apparently turned out to be a false alarm , the university 's president said .

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The suspect has been charged with murder

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Deceased identified as Brandon Robinson , 20 , of Orangeburg , South Carolina

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Police continue to hunt for other people who witnesses said were tied to the crime

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This is the third shooting at a U.S. university this week